Routing and grooving machine



Jan. 21, 1930. s. R LEssoR 1,744,651

ROUTING AND GROOVING MACHINE Filed Dec. 9. 1927 4 Sheets-Sheet I INVENTOR v G.R.L66607;

ATTORNEY Jan 21, 1930.

G. R. LESSQR ROUTING AND GROOVING MACHINE Filed Dec. 9. 1927 4 Sheets-Sheet 2 INVENTOR akllesaor;

/10. ATTORNEY Jan. 21, 1930. G. R; LESSOR .7 4.6

ROUTING AND GROOVING MACHINE Filed Dec. 9. 1927 4 Sfieets-Sheefi." a

' ATTORNEY Jamzl, 1930. G. R. LESSOR .7

ROUTING AND GROOVING MACHINE Filed Dec. 9. 1927 4 Sheets-Sheet 5- INVENTOR a. R .Leasor; BY

WM/[4% ATTORNEY Patented Jan. 21, 1930 UNITED STATES PATENT OFFICE GEORGE n; LESSOR, or cnossnr'r, ARKANSAS, AssrGNoRoroNn-HALnTo ERWIN, or cRossn'rn'AnKAnsAs' JOHN ROUTING AND GBOOVING MACHINE.

Application filed' December 9, 1927;

his invention relates to a device for forming grooves and routing elongated articles.

An object of the invention lsthe provision of a machine which will provide grooves in wooden sticks at the same time routing'the' 20 ing drawings; nevertheless, it-is to be understood that this invention is not'confined to the I disclosure beingsusceptibleof such changes and modifications as shall define no material departure from the salient features'of the in vention as expressed in the appended claims.

In the drawings Figure 1 is a side view in elevation of the device constructed according to the principles of my invention,

Figure 2 is a plan view of the same,

Figure 3 is a view in perspective of the device,

Figures is an end view in elevation-of the grooving and routing device,

Figure 5 is avertical section taken along the line 55 of Fig. 4,

Figure 6 is-a view in perspective of a piece of work which is operated on in the machine. 40 Referring more particularly to the drawings 1O designates a table supported on the floor by means of legs 11 which are reinforced and joined by cross bars 12. These cross bars provide means for supporting a 5 table 13 having bearings 1-l and 15 respectively for shafts l6 and 17. Pulleys 18 and 19 are rigid with the shaft 16, while pulley20 is rigid with the shaft 17.. A belt 21 is trained on pulleys19 and 20, while a belt 22 is trained a on the pulleylS and a pulley 23- directly.

Serial No. 238,892.

coupled withanelectric motor 24 supported by a bracket25 on the table 13. v

A shaft is driven by means of a pulley 31, the pulley being in turn driven by 'a belt 32 trained on the pulleys 31 and 33. A pair of sprockets 34am driven by the shaftilO, only one being shown.

An extensiouSBofa table 10 projectsbeyond one end and has a depending bracket 36 carrying a shaft 37 on which ismounted a pair of spaced sprockets 38 and 89. Thesesprockets form idling sprockets 88 and' 39." A chain 40 is trained over thesprocket 38 and one of thesprockets-ZH, while a chain llis trained over-the sprocket 39'and-the other of the sprockets-3%. Said chains are drivenby thesprockets 2340f the shaft 30.-

The motor'50 is mounted on the table 10 and has a shaft5l directly coupled therewithand mounted in bearings at the upperends of the standards 52. Pulleys 53- and 54 are rigid with the said shaft. A belt 55 is trained over the pulley 53.

A pulley 56 isrigid with a shaft 57 tow-hich is rigidly: connected a moving means-58 in: the formo-f a'saw. The shaft 57 mounted-in bearings59 is supported by brackets 60 which are connected to the slide 61 mounted in tracks 62 of'post 63. A screw 64 is threaded into lugs 65 which ares-ecured inany approved manner to the slide 61- and has a crank 66 at oneend for rotating the screw, thereby verticallyadjusting the screw for a purpose which will be presently explained.

Means is provided for throwing the saw 58 out of contactwith the work at intervals and when the groove 67 in the strip of work- 68 has beencompleted or has been carried to the point indicated by the numeral 69; This lifting mechanism includes a lever 70 pivotally mounted at 71'ona bracket 72, the free end of-the lever being provided with a member 73 which is adapted to be engaged by lugs 7 9 located in spaced relation on the chain 40. The other end of the lever is connected by means of a link 74to a lever 75 which is pivotedat 76 on abracket 77-. The

' other end of the lever 75 is connected at 78' with the screw 64, so that'if the-member- 73 is elevated by the spaced lugs=79 onthechain- 40, the link 74 will be moved downwardly, while the rod 64 will be moved upwardly likewise raising slide 64 and the saw 58 out of contact with the work at the completion of the groove in the work 68.

A routing device-indicated by the numeral is carried by a shaft 81 rotatably mounted in bearings 82 carried by a post 83. A spring 84 is coiled around the upper end of the shaft and having one end in engagement with the bearings 82, the upper end of the spring being in contact with a washer 85 secured to the shaft 81. The upper free end of said shaft is received within a yoke 86 formed intermediate the ends of the lever 87. A pulley 88 is rigid with the shaft 81 and on which is trained a belt 89, said belt being likewise trained on the pulley 54.

Means is provided for automatically lower ing the routing tool 80 onto the work when the work has been moved to a point where it will engage the end 69 of the grox e 60 for cutting the proper depth of the groove at this point. For this purpose a lever 90 is pivotally mounted on a bracket 91 and provided at one end with a lug engaging member 92, the other end is pivotally connected as shown at 93 with a rod 94 which is connected to a second rod 95 by an adjusting member 96. The upper end of the rod 95 is pivotally connected at 97 with one end of the lever 87 the other end being pivotally mounted at 98 at the upper end of a post 99 which is secured to the table 10.

A belt tightener is mounted in close association with the belt 55 and has a roller 100 adapted to engage one portion of the belt. This roller is carried on on end of an arcuately shaped lever 101 pivoted at 102 on a bracket 103. A rod 104 is received within perforations in one end of the lever 101 and a bracket 105 and is provided with a nut 106 threaded at one end which is adjacent to the bracket 105 for causing the rod 104 to force an end of the lever 101 towards the bracket 105 thereby elevating the roller 100 and increasing pressure on the belt 55. A spring 107 on the rod 104 is located between the bracket 105 in the nut 106.

A pair of spaced arms 110 and 111 are secured to a table 10 A set screw 112 is threaded into the free end of each arm and carries a pressure plate 113 which is bent to engage the top of the work when said work is being carried through a channel 114 formed in the table 10 by means of the chain 41, said chain adapted to normally move through the said groove. The chain 40 moves through the groove 115 which is locatedin spaced parallel relation with the groove 114.

The operation of my device is as follows:

The strips of wood 68 are placed within the groove 114 and on the chain 41 in such a relation that they will be engaged by the grooving element or saw 58, and the saw remains in contact with the work until it reaches the point 68 when a spaced lug 79 engages the member 73 actuating the lever 70, link 74, and lever 75, thereby elevating the rod 64 whlch carries the slide 61 upwardly and likewise the shaft 57 and cutter 58. It will be noted that the member 73 is of sufficient length to maintain the cutter 58 in an elevated position so that one end of the work 68 will pass beneath the cutter Without having the groove continue entirely through said work. As the groove is being formed in the stock 68 the members 113 will press upon the work and maintain the same in proper position to provide for the correct depth in the work.

Since the stick 68 passes beneath the routing tool 80 and the point 69 of the groove reaches said tool, the position of the member 92 is such that it will be elevated by a lug 79 causing the shaft 81 to be depressed through the action of the lever 87 momentarily and for suflicient time to permit the tool to cut out the groove as indicated at 69 to a depth which will correspond to the depth of the groove formed by the cutting tool 58. It will be appreciated that when the saw 58 is elevated at a point in the stick 68 as indicated at 69, that the groove will be inclined upwardly towards the upper surface while the routing tool, therefore, removes this portion to obtain a uniform depth of groove throughout the whole stick. 4

Marks or other means (not shown) are adapted to be applied to the chain 41 to indicate the position of the sticks so that they will register with the saw 58 and the tool 80, and such marks will conform in spacing to the lugs 79 on the chain 40.

I claim 1. A device of the character described com prising a table, a cutter forming grooves in strips of material, a routing tool, means for feeding the strips in operative relation with the cutter and routing tool, means for raising and lowering the cutter each time the advancing end of the strip reaches the cutter to provide for an ungrooved portion of the strip, and means for causing the routing tool to be moved in operative relation with the strip for completing the depth of the groove at a point where the cutter leaves the strip.

2. A device of the character described comprising a table, a cutter forming grooves in strips of material, a routing tool, means for feeding the strips in operative relation with the cutter and routing tool, means for raising the cutter from the strip before the cutter has completed the groove throughout the length of the strip, and means for positioning the routing tool momentarily in an operative position on the work for completing the depth of the groove at a point where the cutter leaves the strip.

3. A device of the character described comprising a table, a cutter forming grooves in strips of material, a routing tool, means for feeding the strips in operative relation with the cutter and routing tool, means for raising and lowering the cutter each time the advancing end of the strip reaches the cutter to provide for an ungrooved portion of the strip, means for causing the routing tool to be moved in operative relation with the strip for completing the depth of the groove at a point where the cutter leaves the strip, and at a time when the cutter is completing the groove in the strip, and means for retaining the strip in position during the grooving operation. 4. A device of the character described comprising a table, a travelling carrier movable over the table, a cutter for forming grooves in strips of material located in spaced relation on the travelling carrier, an endless chain moved simultaneously with the travelling carrier provided with spaced lugs, a lever pivotally mounted intermediate its ends on the table and having a trip adapted to be engaged by the lugs for rocking the lever, a slide carrying the cutter, a lever operatively connected with the slide, and connections between the first and second mentioned levers for causing operation of the slide when the first mentioned lever is rocked and for raising the cutter out of engagement with the strips of material.

5. A device of the character described comprising atable, a travelling carrier mov able over the table, a cutter for forming grooves in strips of material located in spaced relation on the travelling carrier, an endless chain moved simultaneously with the travelling carrier provided with spaced lugs, a lever pivotally mounted intermediate its ends on the table and having a trip adapted to be engaged by the lugs for rocking the lever, a slide carrying the cutter, a lever operatively connected with the slide, and connections between the first and second mentioned levers for causing operation of the slide when the first mentioned lever is rocked and for raisingthe cutter out of engagement with the strips of material, a second tripping means located in the path of the moving lugs, a. boring means adapted to be reciprocated by the second mentioned tripping means causing said boring means to engage the work at a point where the cutter has been removed from the strip of material.

Signed at Crossett, in the county of Ashley,

and State of Arkansas, this 22d day of November, A. D. nineteen hundred and twentyseven.

GEORGE R. LESSOR. 

